Absence of intramolecular charge-transfer quenching in photoexcited 4-benzoylpiperidines was written by Wagner, Peter J.;Scheve, B. J.. And the article was included in Journal of the American Chemical Society in 1977.Synthetic Route of C13H16N2 This article mentions the following:
The photochem. of I and II was compared with that of III. Like III, I and II undergo competitive α cleavage (yielding PhCHO and cyclization to bicyclo[3.1.1]heptan-6-ols. Sensitization and quenching studies both reveal that I, like III, forms two kinetically distinct triplets. These are assigned to separate chair conformers with the benzoyl group axial (I-a) or equatorial (I-e). Low-temperature 13C NMR indicates a I-a/I-e ratio comparable with that for III. I-e has the same triplet lifetime as III-e and cleaves with the same quantum efficiency. The lack of intramol. change-transfer quanching in I-e indicates that such quenching requires through-space orbital overlap. Triplet decay of I-a is 100 times faster than in III-a. The enhancement is ascribed to stabilization of the γ-radical site by the N lone pair. In the experiment, the researchers used many compounds, for example, 1-Benzylpiperidine-4-carbonitrile (cas: 62718-31-4Synthetic Route of C13H16N2).
1-Benzylpiperidine-4-carbonitrile (cas: 62718-31-4) belongs to piperidine derivatives. The piperidine ring can be found not only in more than half of the currently known structures of alkaloids, but also in many natural or synthetic compounds with interesting biological activities. Piperidine derivatives are being utilized in different ways as anticancer, antiviral, antimalarial, antimicrobial, antifungal, antihypertension, analgesic, anti-inflammatory, anti-Alzheimer, antipsychotic and/or anticoagulant agents.Synthetic Route of C13H16N2
Referemce:
Piperidine – Wikipedia,
Piperidine | C5H11N – PubChem